Some info on the RHS cast iron heads plus port work... - Moparts Forums

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Re: Some info on the RHS cast iron heads plus port work... [Re: S/ST 3040] #529446 11/18/09 10:42 AM 11/18/09 10:42 AM
Joined: Jan 2003 Posts: 999 British Columbia T toddd super stock
toddd super stock T Joined: Jan 2003 Posts: 999 British Columbia	Adam...correct me if i'm wrong , but have a good look at the studs.......Let's leave that one where it is!

Re: Some info on the RHS cast iron heads plus port work... [Re: RAMM] #529447 11/18/09 12:51 PM 11/18/09 12:51 PM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger OP master
Brian Hafliger OP master Joined: Jan 2003 Posts: 5,486 SoCal	Quote: Quote: Intake opening: Lets say at .550 lift air speed is 327fps!! Brian, 327fps is really fast for that location don't you think? Can you slow it down some or is it not necessary for what you are doing? J.Rob That's after porting!!!! Yes it's way too fast. Nothing can really be done about it, as I've opened it up about as much as possible. Tubing will only slow it maybe 10fps which is still too fast. One thing...the intake helped it hold on to the flow up to .600. And 327fps was at .550 lift, .500 was 308fps which is much better. I have another set here, I may port and plug the pushrod hole and offset it using my Econo W2 rockers and put on my 360 shortblock I'm trying to sell. If I do that, I will likely put it back to pump gas (10:1) and change the cam, then dyno it to see what it does. If so, I'll post it...but it'll be a little while. Brian Hafliger

Re: Some info on the RHS cast iron heads plus port work... [Re: toddd] #529448 11/18/09 05:27 PM 11/18/09 05:27 PM
Joined: Jan 2003 Posts: 7,978 Bethel Ct A AdamR master
AdamR master A Joined: Jan 2003 Posts: 7,978 Bethel Ct	Quote: Adam...correct me if i'm wrong , but have a good look at the studs.......Let's leave that one where it is! He got smart and went to LA shaft mounts on this set.

Re: Some info on the RHS cast iron heads plus port work... [Re: AdamR] #529449 11/18/09 07:57 PM 11/18/09 07:57 PM
Joined: Aug 2007 Posts: 498 El Dorado Ca 6 65signet mopar
65signet mopar 6 Joined: Aug 2007 Posts: 498 El Dorado Ca	Great info, it will be interesting to see how they work in the car 1965 Plymouth Barracuda 273 M/SA 1970 Plymouth Duster 360/904 10.60s with J heads

Re: Some info on the RHS cast iron heads plus port work... [Re: 65signet] #529450 11/18/09 09:56 PM 11/18/09 09:56 PM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger OP master
Brian Hafliger OP master Joined: Jan 2003 Posts: 5,486 SoCal	Here's a few more pics with the Hughes 1.6 rockers... 5613231-RHSheads001.jpg (214 downloads)

Re: Some info on the RHS cast iron heads plus port work... [Re: Brian Hafliger] #529451 11/18/09 09:57 PM 11/18/09 09:57 PM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger OP master
Brian Hafliger OP master Joined: Jan 2003 Posts: 5,486 SoCal	5613233-RHSheads002.jpg (180 downloads)

Re: Some info on the RHS cast iron heads plus port work... [Re: Brian Hafliger] #529452 11/18/09 09:57 PM 11/18/09 09:57 PM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger OP master
Brian Hafliger OP master Joined: Jan 2003 Posts: 5,486 SoCal	5613236-RHSheads003.jpg (164 downloads)

Re: Some info on the RHS cast iron heads plus port work... [Re: Brian Hafliger] #529453 11/18/09 10:10 PM 11/18/09 10:10 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	Brian......how are those CNC rockers for spring clearance? Would a 1.500" spring clear?

Re: Some info on the RHS cast iron heads plus port work... [Re: S/ST 3040] #529454 11/19/09 02:06 PM 11/19/09 02:06 PM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger OP master
Brian Hafliger OP master Joined: Jan 2003 Posts: 5,486 SoCal	Quote: Brian......how are those CNC rockers for spring clearance? Would a 1.500" spring clear? Nope! Just tried. They might work with a lower installed height as these heads were designed but not the way I have them setup. These heads in conjunction with the 8mm valves are perfect candidates for the beehive springs. I'm not completely sure but I think I could get a 26120 spring to work if needed for a street type roller cam. Brian Hafliger

Re: Some info on the RHS cast iron heads plus port work... [Re: Brian Hafliger] #529455 11/19/09 02:28 PM 11/19/09 02:28 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	Thanks. Sorry for getting off topic.

Re: Some info on the RHS cast iron heads plus port work... [Re: S/ST 3040] #529456 11/19/09 02:58 PM 11/19/09 02:58 PM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger OP master
Brian Hafliger OP master Joined: Jan 2003 Posts: 5,486 SoCal	Quote: Thanks. Sorry for getting off topic. Like I care....LOL

Re: Some info on the RHS cast iron heads plus port work... [Re: Brian Hafliger] #529457 11/19/09 03:27 PM 11/19/09 03:27 PM
Joined: Feb 2004 Posts: 6,257 acworth / N. georgia - south e... cheapstreetdustr master
cheapstreetdustr master Joined: Feb 2004 Posts: 6,257 acworth / N. georgia - south e...	thats interesting... no issue with the 88mm stem and roller tip runout... you could set the stands higher...no...? to get more keeper to rocker clearence.?.in the other sinario... you put all new guides in? how long of a guide did they end up? finished length..? is that the cut down intake valve..in the pic? cheapst 365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured [image][/image]

Re: Some info on the RHS cast iron heads plus port work... [Re: cheapstreetdustr] #529458 11/19/09 04:18 PM 11/19/09 04:18 PM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger OP master
Brian Hafliger OP master Joined: Jan 2003 Posts: 5,486 SoCal	Quote: thats interesting... no issue with the 88mm stem and roller tip runout... you could set the stands higher...no...? to get more keeper to rocker clearence.?.in the other sinario... you put all new guides in? how long of a guide did they end up? finished length..? is that the cut down intake valve..in the pic? cheapst Rocker rolls fine on the tip...to go from 5/16 to the 8mm is only a couple thou. so I just ream it in the existing integral guide. Yes that's the 2.00 valve cut down from 2.02. Brian Hafliger

Re: Some info on the RHS cast iron heads plus port work... [Re: Brian Hafliger] #529459 11/19/09 05:07 PM 11/19/09 05:07 PM
Joined: Nov 2007 Posts: 1,600 Alberta Canada StrokerAspen top fuel
StrokerAspen top fuel Joined: Nov 2007 Posts: 1,600 Alberta Canada	Just checking in and book marking

Re: Some info on the RHS cast iron heads plus port work... [Re: StrokerAspen] #529460 11/20/09 12:20 AM 11/20/09 12:20 AM
Joined: Sep 2006 Posts: 150 Illinois F fishy68 member
fishy68 member F Joined: Sep 2006 Posts: 150 Illinois	Looking sweet Brian!! Can't wait to see the dyno report. 68 Cuda 408/904/8-3/4 02 Dakota 4.7 auto

Re: Some info on the RHS cast iron heads plus port work... [Re: Brian Hafliger] #529461 11/20/09 10:30 AM 11/20/09 10:30 AM
Joined: Mar 2005 Posts: 792 Earth R Rob C super stock
Rob C super stock R Joined: Mar 2005 Posts: 792 Earth	Quote: Intake opening: Lets say at .550 lift air speed is 327fps!! Wouldn't the intake, left stock, slow down the FPS rate?

Re: Some info on the RHS cast iron heads plus port work... [Re: Rob C] #529462 11/20/09 01:24 PM 11/20/09 01:24 PM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger OP master
Brian Hafliger OP master Joined: Jan 2003 Posts: 5,486 SoCal	Quote: Quote: Intake opening: Lets say at .550 lift air speed is 327fps!! Wouldn't the intake, left stock, slow down the FPS rate? No, the smaller the hole the faster the air speed to a point. If you measure air speed and then add clay you'll see a rise in air speed unless you almost completely choke the area off. Measure the air speed of a BBC heads sometime at the opening! S-L-O-W..... Brian Hafliger

Re: Some info on the RHS cast iron heads plus port work... [Re: Brian Hafliger] #529463 11/20/09 02:15 PM 11/20/09 02:15 PM
Joined: Mar 2005 Posts: 792 Earth R Rob C super stock
Rob C super stock R Joined: Mar 2005 Posts: 792 Earth	Thanks. I understand the hole size issue and speed. I was thinking obstuction hampering speed, if possible. Also noted was the cfm drop with the unported intake. In your opinoion. wouldn't a larger port head do better since air speed is to high. Or simply a larger port. Which is not happening in this case with this head. It seems to be about max at the roof. An example of a head like a W-2/5 be better off on this particular application? Last question; This Indy head with it's ported port size. Wouldn't it be better on a standard size 340/360 engine or say 380 cubes.

Re: Some info on the RHS cast iron heads plus port work... [Re: Rob C] #529464 11/20/09 02:34 PM 11/20/09 02:34 PM
Joined: Jan 2003 Posts: 5,486 SoCal Brian Hafliger OP master
Brian Hafliger OP master Joined: Jan 2003 Posts: 5,486 SoCal	Quote: Thanks. I understand the hole size issue and speed. I was thinking obstuction hampering speed, if possible. Also noted was the cfm drop with the unported intake. In your opinoion. wouldn't a larger port head do better since air speed is to high. Or simply a larger port. Which is not happening in this case with this head. It seems to be about max at the roof. An example of a head like a W-2/5 be better off on this particular application? Last question; This Indy head with it's ported port size. Wouldn't it be better on a standard size 340/360 engine or say 380 cubes. Yes! When my customer came to me, he already had these heads and his 408short block done. He had problems with the first set so he opted to have us do this set for him. Yes, a W2 or Indy -2 or even a well ported eddy head would have been better. I only have to work with what the customer supplies me with. These heads were probably designed around the 318-360 cid and they'll work very well for that application. We'll see just how well they work on a 408 soon...I do think they will still make good power even though they are not perfect for the application. Brian Hafliger

Re: Some info on the RHS cast iron heads plus port work... [Re: Brian Hafliger] #529465 11/20/09 02:40 PM 11/20/09 02:40 PM
Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere S S/ST 3040 master
S/ST 3040 master S Joined: Jul 2006 Posts: 4,595 On the south side of Nowhere	You didn't post the ported numbers without the intake.

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